Home / 20,247.40-30,371.10-20,117.80

Finding the Fourth Proportional to 20,247.40, 30,371.10 and 20,117.80

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Solution

The fourth proportional to 20,247.40, 30,371.10 and 20,117.80 is: 30,176.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,247.40 : 30,371.10 = 20,117.80 : x
  2. Step 2: Convert to fraction form
    20,247.40/30,371.10 = 20,117.80/x
  3. Step 3: Cross multiply
    20,247.40x = 30,371.10 × 20,117.80
  4. Step 4: Simplify right side
    20,247.40x = 610,999,715.58
  5. Step 5: Solve for x
    x = 610,999,715.58/20,247.40
  6. Step 6: Final answer
    x = 30,176.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.